HELOCs are NOT sensitive to the 10 year treasury.

Additionally, you could not move your Roth IRA funds into a Solo(k) because for some reason unknown to even the Department of Treasury (I asked them) Roth IRAs cannot transfer into the Roth bucket of a Solo 401(k).

I would not even think to throw money at them.Like what James said and what I just read,  big large fund would not touch multifamily until the spread between treasury and yield cap settles.Also, come on smarter folks, who in the right mind would buy MF property with 4% cap rate, I will buy one for SF Airbnb, but not for MF, because that's dumb and extremely risky even without interest rate hike.

Heck go to the casino and put it on roulette wheel of black or red. 

Treasury Bonds is not a free market.

Here is the rule from the IRS regarding length of stay for short term rentals:As defined by Treasury Regulation Sec. 1.469-1T(e)(3)(ii)(A)The average period of customer use is 7 days or lessThe average period of customer use is 30 days or less.

They made their millions, and while they don't want the gravy train cut off, they also are looking at their personal bank account and thinking: I can put my cash in treasuries and still make $1mm/yr, so 'F' it.B) What is this "long time in business"?  

As you mention, this has been priced into the markets for some time, and the reality is those who buy MBS's and invest in mortgages compete against the 10 year treasury bill.

The treasury yields are actually moving up since they announced the cut.

It is analogous to owning a 30 yr treasury bond at well above current rates.